'Substantialness' definitions:

Definition of 'substantialness'

From: WordNet
noun
The quality of being substantial or having substance [syn: substantiality, substantialness, solidness] [ant: insubstantiality]

Definition of 'Substantialness'

From: GCIDE
  • Substantialness \Sub*stan"tial*ness\, n. The quality or state of being substantial; as, the substantialness of a wall or column. [1913 Webster]